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c906108c | 1 | /* Source-language-related definitions for GDB. |
1bac305b | 2 | |
e2882c85 | 3 | Copyright (C) 1991-2018 Free Software Foundation, Inc. |
1bac305b | 4 | |
c906108c SS |
5 | Contributed by the Department of Computer Science at the State University |
6 | of New York at Buffalo. | |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
22 | |
23 | #if !defined (LANGUAGE_H) | |
24 | #define LANGUAGE_H 1 | |
25 | ||
671afef6 | 26 | #include "symtab.h" |
14bc53a8 | 27 | #include "common/function-view.h" |
e9d9f57e | 28 | #include "expression.h" |
671afef6 | 29 | |
1777feb0 | 30 | /* Forward decls for prototypes. */ |
c906108c SS |
31 | struct value; |
32 | struct objfile; | |
52f729a7 | 33 | struct frame_info; |
da3331ec | 34 | struct ui_file; |
79a45b7d | 35 | struct value_print_options; |
79d43c61 | 36 | struct type_print_options; |
a53b64ea | 37 | struct lang_varobj_ops; |
410a0ff2 | 38 | struct parser_state; |
bb2ec1b3 | 39 | struct compile_instance; |
a207cff2 | 40 | struct completion_match_for_lcd; |
62dfaa9c | 41 | |
1777feb0 | 42 | #define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims. */ |
c906108c SS |
43 | |
44 | /* range_mode == | |
45 | range_mode_auto: range_check set automatically to default of language. | |
46 | range_mode_manual: range_check set manually by user. */ | |
47 | ||
c5aa993b JM |
48 | extern enum range_mode |
49 | { | |
50 | range_mode_auto, range_mode_manual | |
51 | } | |
52 | range_mode; | |
c906108c SS |
53 | |
54 | /* range_check == | |
55 | range_check_on: Ranges are checked in GDB expressions, producing errors. | |
56 | range_check_warn: Ranges are checked, producing warnings. | |
57 | range_check_off: Ranges are not checked in GDB expressions. */ | |
58 | ||
59 | extern enum range_check | |
c5aa993b JM |
60 | { |
61 | range_check_off, range_check_warn, range_check_on | |
62 | } | |
63 | range_check; | |
c906108c | 64 | |
63872f9d | 65 | /* case_mode == |
1777feb0 | 66 | case_mode_auto: case_sensitivity set upon selection of scope. |
63872f9d JG |
67 | case_mode_manual: case_sensitivity set only by user. */ |
68 | ||
69 | extern enum case_mode | |
70 | { | |
71 | case_mode_auto, case_mode_manual | |
72 | } | |
73 | case_mode; | |
74 | ||
7ca2d3a3 | 75 | /* array_ordering == |
1777feb0 MS |
76 | array_row_major: Arrays are in row major order. |
77 | array_column_major: Arrays are in column major order. */ | |
7ca2d3a3 DL |
78 | |
79 | extern enum array_ordering | |
80 | { | |
81 | array_row_major, array_column_major | |
82 | } | |
83 | array_ordering; | |
84 | ||
85 | ||
63872f9d | 86 | /* case_sensitivity == |
1777feb0 MS |
87 | case_sensitive_on: Case sensitivity in name matching is used. |
88 | case_sensitive_off: Case sensitivity in name matching is not used. */ | |
63872f9d JG |
89 | |
90 | extern enum case_sensitivity | |
91 | { | |
92 | case_sensitive_on, case_sensitive_off | |
93 | } | |
94 | case_sensitivity; | |
9a044a89 TT |
95 | |
96 | ||
97 | /* macro_expansion == | |
1777feb0 MS |
98 | macro_expansion_no: No macro expansion is available. |
99 | macro_expansion_c: C-like macro expansion is available. */ | |
9a044a89 TT |
100 | |
101 | enum macro_expansion | |
102 | { | |
103 | macro_expansion_no, macro_expansion_c | |
104 | }; | |
105 | ||
c906108c | 106 | \f |
f290d38e AC |
107 | /* Per architecture (OS/ABI) language information. */ |
108 | ||
109 | struct language_arch_info | |
110 | { | |
5a44ea29 | 111 | /* Its primitive types. This is a vector ended by a NULL pointer. |
f290d38e AC |
112 | These types can be specified by name in parsing types in |
113 | expressions, regardless of whether the program being debugged | |
114 | actually defines such a type. */ | |
5a44ea29 | 115 | struct type **primitive_type_vector; |
1994afbf DE |
116 | |
117 | /* Symbol wrappers around primitive_type_vector, so that the symbol lookup | |
118 | machinery can return them. */ | |
119 | struct symbol **primitive_type_symbols; | |
120 | ||
1777feb0 | 121 | /* Type of elements of strings. */ |
f290d38e | 122 | struct type *string_char_type; |
fbb06eb1 UW |
123 | |
124 | /* Symbol name of type to use as boolean type, if defined. */ | |
125 | const char *bool_type_symbol; | |
126 | /* Otherwise, this is the default boolean builtin type. */ | |
127 | struct type *bool_type_default; | |
f290d38e AC |
128 | }; |
129 | ||
c906108c SS |
130 | /* Structure tying together assorted information about a language. */ |
131 | ||
132 | struct language_defn | |
c5aa993b | 133 | { |
1777feb0 | 134 | /* Name of the language. */ |
c906108c | 135 | |
27cd387b | 136 | const char *la_name; |
c906108c | 137 | |
6abde28f YQ |
138 | /* Natural or official name of the language. */ |
139 | ||
140 | const char *la_natural_name; | |
141 | ||
1777feb0 | 142 | /* its symtab language-enum (defs.h). */ |
c906108c | 143 | |
c5aa993b | 144 | enum language la_language; |
c906108c | 145 | |
1777feb0 | 146 | /* Default range checking. */ |
c906108c | 147 | |
c5aa993b | 148 | enum range_check la_range_check; |
c906108c | 149 | |
1777feb0 | 150 | /* Default case sensitivity. */ |
63872f9d JG |
151 | enum case_sensitivity la_case_sensitivity; |
152 | ||
1777feb0 | 153 | /* Multi-dimensional array ordering. */ |
7ca2d3a3 DL |
154 | enum array_ordering la_array_ordering; |
155 | ||
9a044a89 TT |
156 | /* Style of macro expansion, if any, supported by this language. */ |
157 | enum macro_expansion la_macro_expansion; | |
158 | ||
56618e20 TT |
159 | /* A NULL-terminated array of file extensions for this language. |
160 | The extension must include the ".", like ".c". If this | |
161 | language doesn't need to provide any filename extensions, this | |
162 | may be NULL. */ | |
163 | ||
164 | const char *const *la_filename_extensions; | |
165 | ||
5f9769d1 | 166 | /* Definitions related to expression printing, prefixifying, and |
1777feb0 | 167 | dumping. */ |
5f9769d1 PH |
168 | |
169 | const struct exp_descriptor *la_exp_desc; | |
170 | ||
1777feb0 | 171 | /* Parser function. */ |
c906108c | 172 | |
410a0ff2 | 173 | int (*la_parser) (struct parser_state *); |
c906108c | 174 | |
e85c3284 PH |
175 | /* Given an expression *EXPP created by prefixifying the result of |
176 | la_parser, perform any remaining processing necessary to complete | |
177 | its translation. *EXPP may change; la_post_parser is responsible | |
178 | for releasing its previous contents, if necessary. If | |
179 | VOID_CONTEXT_P, then no value is expected from the expression. */ | |
180 | ||
e9d9f57e | 181 | void (*la_post_parser) (expression_up *expp, int void_context_p); |
e85c3284 | 182 | |
3e43a32a MS |
183 | void (*la_printchar) (int ch, struct type *chtype, |
184 | struct ui_file * stream); | |
c906108c | 185 | |
6c7a06a3 TT |
186 | void (*la_printstr) (struct ui_file * stream, struct type *elttype, |
187 | const gdb_byte *string, unsigned int length, | |
be759fcf | 188 | const char *encoding, int force_ellipses, |
79a45b7d | 189 | const struct value_print_options *); |
c906108c | 190 | |
6c7a06a3 TT |
191 | void (*la_emitchar) (int ch, struct type *chtype, |
192 | struct ui_file * stream, int quoter); | |
c906108c | 193 | |
1777feb0 | 194 | /* Print a type using syntax appropriate for this language. */ |
c906108c | 195 | |
25b524e8 | 196 | void (*la_print_type) (struct type *, const char *, struct ui_file *, int, |
79d43c61 | 197 | int, const struct type_print_options *); |
c906108c | 198 | |
5c6ce71d TT |
199 | /* Print a typedef using syntax appropriate for this language. |
200 | TYPE is the underlying type. NEW_SYMBOL is the symbol naming | |
201 | the type. STREAM is the output stream on which to print. */ | |
202 | ||
203 | void (*la_print_typedef) (struct type *type, struct symbol *new_symbol, | |
204 | struct ui_file *stream); | |
205 | ||
edf3d5f3 TT |
206 | /* Print a value using syntax appropriate for this language. |
207 | ||
208 | TYPE is the type of the sub-object to be printed. | |
c906108c | 209 | |
edf3d5f3 TT |
210 | EMBEDDED_OFFSET is the offset into the outermost object of the |
211 | sub-object represented by TYPE. This is the object which this | |
212 | call should print. Note that the enclosing type is not | |
213 | available. | |
214 | ||
215 | ADDRESS is the address in the inferior of the enclosing object. | |
216 | ||
217 | STREAM is the stream on which the value is to be printed. | |
218 | ||
219 | RECURSE is the recursion depth. It is zero-based. | |
220 | ||
221 | OPTIONS are the formatting options to be used when | |
222 | printing. */ | |
223 | ||
d3eab38a | 224 | void (*la_val_print) (struct type *type, |
d3eab38a TT |
225 | int embedded_offset, CORE_ADDR address, |
226 | struct ui_file *stream, int recurse, | |
e8b24d9f | 227 | struct value *val, |
d3eab38a | 228 | const struct value_print_options *options); |
c906108c | 229 | |
1777feb0 | 230 | /* Print a top-level value using syntax appropriate for this language. */ |
c906108c | 231 | |
8e069a98 TT |
232 | void (*la_value_print) (struct value *, struct ui_file *, |
233 | const struct value_print_options *); | |
c906108c | 234 | |
63e43d3a PMR |
235 | /* Given a symbol VAR, the corresponding block VAR_BLOCK (if any) and a |
236 | stack frame id FRAME, read the value of the variable and return (pointer | |
237 | to a) struct value containing the value. | |
238 | ||
239 | VAR_BLOCK is needed if there's a possibility for VAR to be outside | |
240 | FRAME. This is what happens if FRAME correspond to a nested function | |
241 | and VAR is defined in the outer function. If callers know that VAR is | |
242 | located in FRAME or is global/static, NULL can be passed as VAR_BLOCK. | |
a5ee536b JB |
243 | |
244 | Throw an error if the variable cannot be found. */ | |
245 | ||
246 | struct value *(*la_read_var_value) (struct symbol *var, | |
63e43d3a | 247 | const struct block *var_block, |
a5ee536b JB |
248 | struct frame_info *frame); |
249 | ||
f636b87d AF |
250 | /* PC is possibly an unknown languages trampoline. |
251 | If that PC falls in a trampoline belonging to this language, | |
252 | return the address of the first pc in the real function, or 0 | |
253 | if it isn't a language tramp for this language. */ | |
52f729a7 | 254 | CORE_ADDR (*skip_trampoline) (struct frame_info *, CORE_ADDR); |
f636b87d | 255 | |
5f9a71c3 DC |
256 | /* Now come some hooks for lookup_symbol. */ |
257 | ||
2b2d9e11 VP |
258 | /* If this is non-NULL, specifies the name that of the implicit |
259 | local variable that refers to the current object instance. */ | |
5f9a71c3 | 260 | |
a121b7c1 | 261 | const char *la_name_of_this; |
5f9a71c3 | 262 | |
59cc4834 JB |
263 | /* True if the symbols names should be stored in GDB's data structures |
264 | for minimal/partial/full symbols using their linkage (aka mangled) | |
265 | form; false if the symbol names should be demangled first. | |
266 | ||
267 | Most languages implement symbol lookup by comparing the demangled | |
268 | names, in which case it is advantageous to store that information | |
269 | already demangled, and so would set this field to false. | |
270 | ||
271 | On the other hand, some languages have opted for doing symbol | |
272 | lookups by comparing mangled names instead, for reasons usually | |
273 | specific to the language. Those languages should set this field | |
274 | to true. | |
275 | ||
276 | And finally, other languages such as C or Asm do not have | |
277 | the concept of mangled vs demangled name, so those languages | |
278 | should set this field to true as well, to prevent any accidental | |
279 | demangling through an unrelated language's demangler. */ | |
280 | ||
281 | const bool la_store_sym_names_in_linkage_form_p; | |
282 | ||
5f9a71c3 DC |
283 | /* This is a function that lookup_symbol will call when it gets to |
284 | the part of symbol lookup where C looks up static and global | |
285 | variables. */ | |
286 | ||
d12307c1 PMR |
287 | struct block_symbol (*la_lookup_symbol_nonlocal) |
288 | (const struct language_defn *, | |
289 | const char *, | |
290 | const struct block *, | |
291 | const domain_enum); | |
5f9a71c3 | 292 | |
b368761e DC |
293 | /* Find the definition of the type with the given name. */ |
294 | struct type *(*la_lookup_transparent_type) (const char *); | |
295 | ||
9a3d7dfd AF |
296 | /* Return demangled language symbol, or NULL. */ |
297 | char *(*la_demangle) (const char *mangled, int options); | |
298 | ||
8b302db8 TT |
299 | /* Demangle a symbol according to this language's rules. Unlike |
300 | la_demangle, this does not take any options. | |
301 | ||
302 | *DEMANGLED will be set by this function. | |
303 | ||
304 | If this function returns 0, then *DEMANGLED must always be set | |
305 | to NULL. | |
306 | ||
307 | If this function returns 1, the implementation may set this to | |
308 | a xmalloc'd string holding the demangled form. However, it is | |
309 | not required to. The string, if any, is owned by the caller. | |
310 | ||
311 | The resulting string should be of the form that will be | |
312 | installed into a symbol. */ | |
313 | int (*la_sniff_from_mangled_name) (const char *mangled, char **demangled); | |
314 | ||
31c27f77 JJ |
315 | /* Return class name of a mangled method name or NULL. */ |
316 | char *(*la_class_name_from_physname) (const char *physname); | |
317 | ||
1777feb0 | 318 | /* Table for printing expressions. */ |
c906108c | 319 | |
c5aa993b | 320 | const struct op_print *la_op_print_tab; |
c906108c | 321 | |
c5aa993b | 322 | /* Zero if the language has first-class arrays. True if there are no |
1777feb0 | 323 | array values, and array objects decay to pointers, as in C. */ |
c906108c | 324 | |
c5aa993b | 325 | char c_style_arrays; |
c906108c | 326 | |
1777feb0 | 327 | /* Index to use for extracting the first element of a string. */ |
c5aa993b | 328 | char string_lower_bound; |
c906108c | 329 | |
6084f43a | 330 | /* The list of characters forming word boundaries. */ |
67cb5b2d | 331 | const char *(*la_word_break_characters) (void); |
6084f43a | 332 | |
eb3ff9a5 | 333 | /* Add to the completion tracker all symbols which are possible |
49c4e619 | 334 | completions for TEXT. WORD is the entire command on which the |
2f68a895 TT |
335 | completion is being made. If CODE is TYPE_CODE_UNDEF, then all |
336 | symbols should be examined; otherwise, only STRUCT_DOMAIN | |
337 | symbols whose type has a code of CODE should be matched. */ | |
eb3ff9a5 PA |
338 | void (*la_collect_symbol_completion_matches) |
339 | (completion_tracker &tracker, | |
c6756f62 | 340 | complete_symbol_mode mode, |
b5ec771e | 341 | symbol_name_match_type match_type, |
eb3ff9a5 PA |
342 | const char *text, |
343 | const char *word, | |
344 | enum type_code code); | |
41d27058 | 345 | |
f290d38e AC |
346 | /* The per-architecture (OS/ABI) language information. */ |
347 | void (*la_language_arch_info) (struct gdbarch *, | |
348 | struct language_arch_info *); | |
349 | ||
e79af960 JB |
350 | /* Print the index of an element of an array. */ |
351 | void (*la_print_array_index) (struct value *index_value, | |
352 | struct ui_file *stream, | |
79a45b7d | 353 | const struct value_print_options *options); |
e79af960 | 354 | |
41f1b697 DJ |
355 | /* Return non-zero if TYPE should be passed (and returned) by |
356 | reference at the language level. */ | |
357 | int (*la_pass_by_reference) (struct type *type); | |
358 | ||
ae6a3a4c | 359 | /* Obtain a string from the inferior, storing it in a newly allocated |
fbb8f299 PM |
360 | buffer in BUFFER, which should be freed by the caller. If the |
361 | in- and out-parameter *LENGTH is specified at -1, the string is | |
362 | read until a null character of the appropriate width is found - | |
363 | otherwise the string is read to the length of characters specified. | |
364 | On completion, *LENGTH will hold the size of the string in characters. | |
365 | If a *LENGTH of -1 was specified it will count only actual | |
366 | characters, excluding any eventual terminating null character. | |
367 | Otherwise *LENGTH will include all characters - including any nulls. | |
368 | CHARSET will hold the encoding used in the string. */ | |
b4be9fad TT |
369 | void (*la_get_string) (struct value *value, |
370 | gdb::unique_xmalloc_ptr<gdb_byte> *buffer, | |
371 | int *length, struct type **chartype, | |
372 | const char **charset); | |
ae6a3a4c | 373 | |
43cc5389 TT |
374 | /* Return an expression that can be used for a location |
375 | watchpoint. TYPE is a pointer type that points to the memory | |
376 | to watch, and ADDR is the address of the watched memory. */ | |
377 | gdb::unique_xmalloc_ptr<char> (*la_watch_location_expression) | |
378 | (struct type *type, CORE_ADDR addr); | |
379 | ||
b5ec771e PA |
380 | /* Return a pointer to the function that should be used to match a |
381 | symbol name against LOOKUP_NAME, according to this language's | |
382 | rules. The matching algorithm depends on LOOKUP_NAME. For | |
383 | example, on Ada, the matching algorithm depends on the symbol | |
384 | name (wild/full/verbatim matching), and on whether we're doing | |
385 | a normal lookup or a completion match lookup. | |
f8eba3c6 | 386 | |
b5ec771e PA |
387 | This field may be NULL, in which case |
388 | default_symbol_name_matcher is used to perform the | |
389 | matching. */ | |
390 | symbol_name_matcher_ftype *(*la_get_symbol_name_matcher) | |
391 | (const lookup_name_info &); | |
f8eba3c6 TT |
392 | |
393 | /* Find all symbols in the current program space matching NAME in | |
394 | DOMAIN, according to this language's rules. | |
395 | ||
4eeaa230 DE |
396 | The search is done in BLOCK only. |
397 | The caller is responsible for iterating up through superblocks | |
398 | if desired. | |
f8eba3c6 | 399 | |
14bc53a8 PA |
400 | For each one, call CALLBACK with the symbol. If CALLBACK |
401 | returns false, the iteration ends at that point. | |
f8eba3c6 | 402 | |
72e1143f TT |
403 | This field may not be NULL. If the language does not need any |
404 | special processing here, 'iterate_over_symbols' should be | |
405 | used as the definition. */ | |
14bc53a8 | 406 | void (*la_iterate_over_symbols) |
b5ec771e PA |
407 | (const struct block *block, const lookup_name_info &name, |
408 | domain_enum domain, | |
14bc53a8 | 409 | gdb::function_view<symbol_found_callback_ftype> callback); |
f8eba3c6 | 410 | |
5ffa0793 PA |
411 | /* Hash the given symbol search name. Use |
412 | default_search_name_hash if no special treatment is | |
413 | required. */ | |
414 | unsigned int (*la_search_name_hash) (const char *name); | |
415 | ||
a53b64ea YQ |
416 | /* Various operations on varobj. */ |
417 | const struct lang_varobj_ops *la_varobj_ops; | |
418 | ||
bb2ec1b3 TT |
419 | /* If this language allows compilation from the gdb command line, |
420 | this method should be non-NULL. When called it should return | |
421 | an instance of struct gcc_context appropriate to the language. | |
422 | When defined this method must never return NULL; instead it | |
423 | should throw an exception on failure. The returned compiler | |
424 | instance is owned by its caller and must be deallocated by | |
425 | calling its 'destroy' method. */ | |
426 | ||
427 | struct compile_instance *(*la_get_compile_instance) (void); | |
428 | ||
429 | /* This method must be defined if 'la_get_gcc_context' is defined. | |
430 | If 'la_get_gcc_context' is not defined, then this method is | |
431 | ignored. | |
432 | ||
aaee65ae PA |
433 | This takes the user-supplied text and returns a new bit of code |
434 | to compile. | |
bb2ec1b3 TT |
435 | |
436 | INST is the compiler instance being used. | |
437 | INPUT is the user's input text. | |
438 | GDBARCH is the architecture to use. | |
439 | EXPR_BLOCK is the block in which the expression is being | |
440 | parsed. | |
441 | EXPR_PC is the PC at which the expression is being parsed. */ | |
442 | ||
aaee65ae PA |
443 | std::string (*la_compute_program) (struct compile_instance *inst, |
444 | const char *input, | |
445 | struct gdbarch *gdbarch, | |
446 | const struct block *expr_block, | |
447 | CORE_ADDR expr_pc); | |
bb2ec1b3 | 448 | |
1777feb0 MS |
449 | /* Add fields above this point, so the magic number is always last. */ |
450 | /* Magic number for compat checking. */ | |
c5aa993b JM |
451 | |
452 | long la_magic; | |
453 | ||
454 | }; | |
c906108c SS |
455 | |
456 | #define LANG_MAGIC 910823L | |
457 | ||
458 | /* Pointer to the language_defn for our current language. This pointer | |
459 | always points to *some* valid struct; it can be used without checking | |
460 | it for validity. | |
461 | ||
462 | The current language affects expression parsing and evaluation | |
463 | (FIXME: it might be cleaner to make the evaluation-related stuff | |
464 | separate exp_opcodes for each different set of semantics. We | |
465 | should at least think this through more clearly with respect to | |
466 | what happens if the language is changed between parsing and | |
467 | evaluation) and printing of things like types and arrays. It does | |
468 | *not* affect symbol-reading-- each source file in a symbol-file has | |
469 | its own language and we should keep track of that regardless of the | |
470 | language when symbols are read. If we want some manual setting for | |
471 | the language of symbol files (e.g. detecting when ".c" files are | |
7e73cedf | 472 | C++), it should be a separate setting from the current_language. */ |
c906108c SS |
473 | |
474 | extern const struct language_defn *current_language; | |
475 | ||
476 | /* Pointer to the language_defn expected by the user, e.g. the language | |
477 | of main(), or the language we last mentioned in a message, or C. */ | |
478 | ||
479 | extern const struct language_defn *expected_language; | |
480 | ||
481 | /* language_mode == | |
482 | language_mode_auto: current_language automatically set upon selection | |
c5aa993b | 483 | of scope (e.g. stack frame) |
c906108c SS |
484 | language_mode_manual: current_language set only by user. */ |
485 | ||
486 | extern enum language_mode | |
c5aa993b JM |
487 | { |
488 | language_mode_auto, language_mode_manual | |
489 | } | |
490 | language_mode; | |
b62f3443 | 491 | |
fbb06eb1 UW |
492 | struct type *language_bool_type (const struct language_defn *l, |
493 | struct gdbarch *gdbarch); | |
494 | ||
b62f3443 JB |
495 | struct type *language_string_char_type (const struct language_defn *l, |
496 | struct gdbarch *gdbarch); | |
497 | ||
1994afbf DE |
498 | /* Look up type NAME in language L, and return its definition for architecture |
499 | GDBARCH. Returns NULL if not found. */ | |
500 | ||
46b0da17 DE |
501 | struct type *language_lookup_primitive_type (const struct language_defn *l, |
502 | struct gdbarch *gdbarch, | |
503 | const char *name); | |
b62f3443 | 504 | |
1994afbf DE |
505 | /* Wrapper around language_lookup_primitive_type to return the |
506 | corresponding symbol. */ | |
507 | ||
508 | struct symbol * | |
509 | language_lookup_primitive_type_as_symbol (const struct language_defn *l, | |
510 | struct gdbarch *gdbarch, | |
511 | const char *name); | |
512 | ||
c906108c SS |
513 | \f |
514 | /* These macros define the behaviour of the expression | |
515 | evaluator. */ | |
516 | ||
1777feb0 | 517 | /* Should we range check values against the domain of their type? */ |
c906108c SS |
518 | #define RANGE_CHECK (range_check != range_check_off) |
519 | ||
1777feb0 MS |
520 | /* "cast" really means conversion. */ |
521 | /* FIXME -- should be a setting in language_defn. */ | |
cc73bb8c TT |
522 | #define CAST_IS_CONVERSION(LANG) ((LANG)->la_language == language_c || \ |
523 | (LANG)->la_language == language_cplus || \ | |
524 | (LANG)->la_language == language_objc) | |
c906108c | 525 | |
a14ed312 | 526 | extern void language_info (int); |
c906108c | 527 | |
a14ed312 | 528 | extern enum language set_language (enum language); |
c906108c | 529 | \f |
c5aa993b | 530 | |
c906108c SS |
531 | /* This page contains functions that return things that are |
532 | specific to languages. Each of these functions is based on | |
533 | the current setting of working_lang, which the user sets | |
1777feb0 | 534 | with the "set language" command. */ |
c906108c | 535 | |
79d43c61 TT |
536 | #define LA_PRINT_TYPE(type,varstring,stream,show,level,flags) \ |
537 | (current_language->la_print_type(type,varstring,stream,show,level,flags)) | |
c906108c | 538 | |
5c6ce71d TT |
539 | #define LA_PRINT_TYPEDEF(type,new_symbol,stream) \ |
540 | (current_language->la_print_typedef(type,new_symbol,stream)) | |
541 | ||
79a45b7d TT |
542 | #define LA_VALUE_PRINT(val,stream,options) \ |
543 | (current_language->la_value_print(val,stream,options)) | |
c906108c | 544 | |
6c7a06a3 TT |
545 | #define LA_PRINT_CHAR(ch, type, stream) \ |
546 | (current_language->la_printchar(ch, type, stream)) | |
3e43a32a | 547 | #define LA_PRINT_STRING(stream, elttype, string, length, encoding, force_ellipses, options) \ |
6c7a06a3 | 548 | (current_language->la_printstr(stream, elttype, string, length, \ |
be759fcf | 549 | encoding, force_ellipses,options)) |
6c7a06a3 TT |
550 | #define LA_EMIT_CHAR(ch, type, stream, quoter) \ |
551 | (current_language->la_emitchar(ch, type, stream, quoter)) | |
96c07c5b TT |
552 | #define LA_GET_STRING(value, buffer, length, chartype, encoding) \ |
553 | (current_language->la_get_string(value, buffer, length, chartype, encoding)) | |
c906108c | 554 | |
577ce03a | 555 | #define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \ |
79a45b7d | 556 | (current_language->la_print_array_index(index_value, stream, options)) |
e79af960 | 557 | |
14bc53a8 PA |
558 | #define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK) \ |
559 | (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK)) | |
f8eba3c6 | 560 | |
c906108c SS |
561 | /* Test a character to decide whether it can be printed in literal form |
562 | or needs to be printed in another representation. For example, | |
563 | in C the literal form of the character with octal value 141 is 'a' | |
564 | and the "other representation" is '\141'. The "other representation" | |
1777feb0 | 565 | is program language dependent. */ |
c906108c SS |
566 | |
567 | #define PRINT_LITERAL_FORM(c) \ | |
568 | ((c) >= 0x20 \ | |
569 | && ((c) < 0x7F || (c) >= 0xA0) \ | |
570 | && (!sevenbit_strings || (c) < 0x80)) | |
571 | ||
c906108c SS |
572 | /* Type predicates */ |
573 | ||
a14ed312 | 574 | extern int pointer_type (struct type *); |
c906108c | 575 | |
c906108c SS |
576 | /* Error messages */ |
577 | ||
a0b31db1 | 578 | extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2); |
c906108c SS |
579 | |
580 | /* Data: Does this value represent "truth" to the current language? */ | |
581 | ||
a14ed312 | 582 | extern int value_true (struct value *); |
c906108c | 583 | |
c906108c SS |
584 | /* Misc: The string representing a particular enum language. */ |
585 | ||
2039bd9f | 586 | extern enum language language_enum (const char *str); |
c906108c | 587 | |
a14ed312 | 588 | extern const struct language_defn *language_def (enum language); |
7a292a7a | 589 | |
27cd387b | 590 | extern const char *language_str (enum language); |
c906108c | 591 | |
1777feb0 | 592 | /* Check for a language-specific trampoline. */ |
f636b87d | 593 | |
52f729a7 | 594 | extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc); |
f636b87d | 595 | |
9a3d7dfd AF |
596 | /* Return demangled language symbol, or NULL. */ |
597 | extern char *language_demangle (const struct language_defn *current_language, | |
598 | const char *mangled, int options); | |
599 | ||
8b302db8 TT |
600 | /* A wrapper for la_sniff_from_mangled_name. The arguments and result |
601 | are as for the method. */ | |
602 | ||
603 | extern int language_sniff_from_mangled_name (const struct language_defn *lang, | |
604 | const char *mangled, | |
605 | char **demangled); | |
606 | ||
31c27f77 JJ |
607 | /* Return class name from physname, or NULL. */ |
608 | extern char *language_class_name_from_physname (const struct language_defn *, | |
609 | const char *physname); | |
610 | ||
9f0a5303 | 611 | /* Splitting strings into words. */ |
67cb5b2d | 612 | extern const char *default_word_break_characters (void); |
9f0a5303 | 613 | |
e79af960 JB |
614 | /* Print the index of an array element using the C99 syntax. */ |
615 | extern void default_print_array_index (struct value *index_value, | |
616 | struct ui_file *stream, | |
79a45b7d | 617 | const struct value_print_options *options); |
e79af960 | 618 | |
41f1b697 DJ |
619 | /* Return non-zero if TYPE should be passed (and returned) by |
620 | reference at the language level. */ | |
621 | int language_pass_by_reference (struct type *type); | |
622 | ||
623 | /* Return zero; by default, types are passed by value at the language | |
624 | level. The target ABI may pass or return some structs by reference | |
625 | independent of this. */ | |
626 | int default_pass_by_reference (struct type *type); | |
627 | ||
5c6ce71d TT |
628 | /* The default implementation of la_print_typedef. */ |
629 | void default_print_typedef (struct type *type, struct symbol *new_symbol, | |
630 | struct ui_file *stream); | |
631 | ||
b4be9fad TT |
632 | void default_get_string (struct value *value, |
633 | gdb::unique_xmalloc_ptr<gdb_byte> *buffer, | |
634 | int *length, struct type **char_type, | |
635 | const char **charset); | |
ae6a3a4c | 636 | |
5ffa0793 PA |
637 | /* Default name hashing function. */ |
638 | ||
639 | /* Produce an unsigned hash value from SEARCH_NAME that is consistent | |
640 | with strcmp_iw, strcmp, and, at least on Ada symbols, wild_match. | |
641 | That is, two identifiers equivalent according to any of those three | |
642 | comparison operators hash to the same value. */ | |
643 | extern unsigned int default_search_name_hash (const char *search_name); | |
644 | ||
b4be9fad TT |
645 | void c_get_string (struct value *value, |
646 | gdb::unique_xmalloc_ptr<gdb_byte> *buffer, | |
647 | int *length, struct type **char_type, | |
648 | const char **charset); | |
ae6a3a4c | 649 | |
b5ec771e PA |
650 | /* The default implementation of la_symbol_name_matcher. Matches with |
651 | strncmp_iw. */ | |
652 | extern bool default_symbol_name_matcher | |
653 | (const char *symbol_search_name, | |
654 | const lookup_name_info &lookup_name, | |
a207cff2 | 655 | completion_match_result *comp_match_res); |
b5ec771e PA |
656 | |
657 | /* Get LANG's symbol_name_matcher method for LOOKUP_NAME. Returns | |
c63d3e8d PA |
658 | default_symbol_name_matcher if not set. LANG is used as a hint; |
659 | the function may ignore it depending on the current language and | |
660 | LOOKUP_NAME. Specifically, if the current language is Ada, this | |
661 | may return an Ada matcher regardless of LANG. */ | |
618daa93 | 662 | symbol_name_matcher_ftype *get_symbol_name_matcher |
b5ec771e PA |
663 | (const language_defn *lang, const lookup_name_info &lookup_name); |
664 | ||
47e77640 PA |
665 | /* The languages supported by GDB. */ |
666 | ||
667 | extern const struct language_defn auto_language_defn; | |
668 | extern const struct language_defn unknown_language_defn; | |
669 | extern const struct language_defn minimal_language_defn; | |
670 | ||
671 | extern const struct language_defn ada_language_defn; | |
672 | extern const struct language_defn asm_language_defn; | |
673 | extern const struct language_defn c_language_defn; | |
674 | extern const struct language_defn cplus_language_defn; | |
675 | extern const struct language_defn d_language_defn; | |
676 | extern const struct language_defn f_language_defn; | |
677 | extern const struct language_defn go_language_defn; | |
678 | extern const struct language_defn m2_language_defn; | |
679 | extern const struct language_defn objc_language_defn; | |
680 | extern const struct language_defn opencl_language_defn; | |
681 | extern const struct language_defn pascal_language_defn; | |
682 | extern const struct language_defn rust_language_defn; | |
683 | ||
e3ad2841 TT |
684 | /* Save the current language and restore it upon destruction. */ |
685 | ||
686 | class scoped_restore_current_language | |
687 | { | |
688 | public: | |
689 | ||
690 | explicit scoped_restore_current_language () | |
691 | : m_lang (current_language->la_language) | |
692 | { | |
693 | } | |
694 | ||
695 | ~scoped_restore_current_language () | |
696 | { | |
697 | set_language (m_lang); | |
698 | } | |
699 | ||
700 | scoped_restore_current_language (const scoped_restore_current_language &) | |
701 | = delete; | |
702 | scoped_restore_current_language &operator= | |
703 | (const scoped_restore_current_language &) = delete; | |
704 | ||
705 | private: | |
706 | ||
707 | enum language m_lang; | |
708 | }; | |
709 | ||
c5aa993b | 710 | #endif /* defined (LANGUAGE_H) */ |